A pilot study of the relationship between Doppler-estimated carotid and brachial artery flow and cardiac index.

Autor:	Weber, U., Glassford, N. J., Eastwood, G. M., Bellomo, R., Hilton, A. K.
Předmět:	CAROTID artery BRACHIAL artery HEART beat DOPPLER ultrasonography BLOOD flow CAROTID artery physiology BLOOD circulation BLOOD flow measurement CARDIAC output HEMODYNAMICS LONGITUDINAL method RESEARCH evaluation PILOT projects PHYSIOLOGY
Zdroj:	Anaesthesia; Oct2015, Vol. 70 Issue 10, p1140-1147, 8p, 1 Color Photograph, 1 Chart, 4 Graphs
Abstrakt:	We measured carotid and brachial artery blood flow by Doppler ultrasound in 11 human volunteers, and related these to cardiac index and to each other. The median (IQR [range]) carotid arterial blood flow was 0.334 (0.223-0.381 [0.052-0.563]) l.min(-1) on the right and 0.315 (0.223-0.369 [0.061-0.690]) l.min(-1) on the left. The brachial arterial blood flow was 0.049 (0.033-0.062 [0.015-0.204]) l.min(-1) on the right and 0.039 (0.027-0.054 [0.011-0.116]) on the left. Cardiac index was 3.2 (2.8-3.5 [1.9-5.4]) l.min(-1) .m(-2) . There was a moderate to good correlation between right-and left-sided flows (brachial: ρ = 0.45; carotid: ρ = 0.567). Brachial and carotid flow had no or a negative correlation with cardiac index (right brachial: ρ = -0.145, left brachial: ρ = -0.349; right carotid: ρ = -0.376, left carotid: ρ = -0.285). In contrast to some previous studies, we found that Doppler-estimated peripheral arterial blood flows only show a weak correlation with cardiac index and cannot be used to provide non-invasive estimates of cardiac index in man. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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